SOLUTION: Rama's expenditure and savings are in the ratio 5:3.If her income increases by 12% and expenditure by 15%,then how much percent do her savings increase? 1)12% 2)13% 3)7% 4)8%

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Rama's expenditure and savings are in the ratio 5:3.If her income increases by 12% and expenditure by 15%,then how much percent do her savings increase? 1)12% 2)13% 3)7% 4)8%      Log On


   

Question 870263: Rama's expenditure and savings are in the ratio 5:3.If her income increases by 12%
and expenditure by 15%,then how much percent do her savings increase?
1)12%
2)13%
3)7%
4)8%
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Rama's expenditure and savings are in the ratio 5:3.If her income increases by 12%
and expenditure by 15%,then how much percent do her savings increase?
1)12%
2)13%
3)7%
4)8%
***
Income=expenditure+savings=5+3=8
increase in income=12%*8=0.96
Increase in expenditure=15%*5=0.75
Increase in savings=0.96-0.75=0.21
% increase in savings=.21/3=7% (ans 3)